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致密油是指在致密储层中,未经过大规模长距离运移而形成的石油聚集,主要赋存空间为紧邻源岩的致密层中。储集层岩性主要包括致密砂岩、致密灰岩和碳酸盐岩。本文从致密储层岩石学、储集空间、物性、含油性测井评价四个方面对西部凹陷沙四段F油层进行了致密储层特征评价研究。
Tight oil refers to the accumulation of oil in dense reservoirs that have not been transported through large-scale long-distance transport, and the main reservoirs are in the tight layer next to the source rocks. Reservoir lithology mainly includes tight sandstone, tight limestone and carbonate rock. In this paper, the characteristics of tight reservoirs in F 4 reservoir of Es 4 in the western sag are studied from the aspects of petrography, reservoir space, physical properties and oil well logging evaluation of tight reservoirs.